Of the three models that we have considered here, only the secluded model of Sec. , i.e., in Ref. [1]}, may induce effects that can be observed by astronomers or in laboratory. However, recent experiments trying to observe direct effect of WIMPS, viz., XENON1T [2]}, LUX [3]}, and PANDA-II [4]}, have not obtained any evidence for dark matter particles, with the upper limits on the spin-independent cross section reaching values as low as \(\sim 10^{-46}\)  cm\(^2\) . [5]}
